When starting a business in Switzerland, understanding the legal obligations related to financial management is crucial for ensuring the longevity of your company. Among these obligations is the appointment of an auditor, a key figure in overseeing and ensuring the transparency of a company’s finances. The role of the auditor is to verify the compliance of accounts, ensure the reliability of financial statements, and reassure shareholders, as well as tax authorities, about the proper management of the company. However, appointing an auditor is not mandatory for all companies in Switzerland. It depends on the size of the company, its turnover, and its activities. This article will help you understand in which cases the presence of an auditor is essential and how it impacts the management of your business.

What is an auditor?
The statutory auditor is an independent expert who plays a fundamental role in verifying a company’s financial statements. Often a certified auditor, they possess the necessary skills to assess whether the annual accounts accurately and faithfully reflect the company’s financial situation. In Switzerland, the statutory auditor is a key player ensuring that companies comply with legal and accounting standards. Their involvement helps ensure financial transparency essential for shareholders, financial partners, and regulatory authorities. They ensure that the company adheres to accounting regulations, helping to prevent irregularities or fraud.
The role of the auditor is not limited to merely validating the accounts. They also have a responsibility towards the protection of shareholders and various stakeholders. By verifying the accuracy of financial information, they enhance investor confidence and ensure that the company adheres to good management practices.
The mission of the auditor
The main mission of the statutory auditor is to conduct an external audit of the company’s annual accounts. They carry out a thorough verification of the accounting to ensure that the information provided in the balance sheets, income statements, and cash flows is accurate and compliant with current legal standards. The statutory auditor analyzes the financial documents and checks the integrity of the data, ensuring the existence of effective internal procedures to prevent errors or fraud.
In Switzerland, the final report of the auditor is a crucial element. This report, presented at the general meeting of shareholders, contains their conclusions on the accuracy of the accounts, as well as recommendations in case of detected issues. These recommendations may include measures to improve internal control procedures or adjustments to enhance financial transparency. This process contributes not only to the reliability of the company’s financial information but also to the protection of shareholders’ interests and other stakeholders.
The role of the auditor is crucial to ensure that the company’s accounts are accurate and that the financial decisions made by shareholders are based on reliable and verified information.
Statutory auditor: mandatory or not in Switzerland?
In Switzerland, the appointment of an auditor depends on the size of the company and its legal form. It is important to understand that not all companies are subject to the same audit requirements. There are two main types of audits: ordinary audit and limited audit. Some companies must undergo a full audit of their accounts, while others may benefit from a lighter review or may not be required to appoint an auditor at all.
Ordinary audit
The ordinary audit is required for large companies, those that exceed two of the following three thresholds for two consecutive financial years:
- A balance sheet total exceeding 20 million Swiss francs.
- An annual turnover exceeding 40 million Swiss francs.
- A workforce of over 250 full-time employees.
If a company exceeds two of these criteria, it is legally required to appoint a statutory auditor to conduct a regular audit. This rigorous review aims to ensure a thorough analysis of the financial statements. The goal is to provide shareholders, financial partners, and authorities with an accurate and comprehensive picture of the company’s financial situation. This involves a meticulous examination of accounting, transactions, and internal procedures.

Limited audit
For smaller companies, a limited audit may suffice. This type of audit is generally required for Sociétés Anonymes (SA) or Sociétés à Responsabilité Limitée (SARL) that do not exceed the thresholds set for a regular audit. The limited audit is less thorough than the regular audit, but it still ensures a certain level of financial transparency and validates the company’s annual accounts.
It is important to note that companies employing fewer than 10 people can, with the agreement of all shareholders, waive the audit. This means they are not required to conduct an audit of the accounts, neither ordinary nor limited, allowing them to simplify their administrative obligations and reduce their management costs.
The auditor is not always mandatory for all companies in Switzerland. Its appointment depends on the size, structure, and volume of activity of the company. Depending on financial criteria and staff size, a company may be subject to a regular audit, a limited audit, or no audit if conditions allow.
Companies exempt from audit in Switzerland
Certain companies in Switzerland may be exempt from audit, particularly smaller entities. This exemption applies to Corporations (SA) and Limited Liability Companies (SARL) that meet specific conditions, particularly regarding size and workforce.
To be exempt from audit, these companies must:
- Have fewer than 10 full-time employees.
- Obtain the unanimous agreement of all shareholders for a waiver of the audit requirement, a procedure called opting-out.
Opting-out is a commonly used option by small businesses, as it allows them to reduce audit-related costs and lighten their administrative burdens. By choosing not to conduct an audit, these companies simplify their accounting management while remaining compliant with Swiss law.
Advantages of audit exemption
One of the main advantages of the audit exemption is the reduction of costs. Audits, whether ordinary or limited, represent a significant investment for a company. For small companies, opting out allows savings on auditor fees while streamlining internal procedures.
Moreover, by avoiding the audit, companies gain administrative flexibility. They are not subject to the same documentation or detailed financial reporting requirements, allowing them to focus on developing their activities without having to allocate internal resources for accounting verification tasks.
Why do some companies still choose to undergo an audit?
Despite the possibility of opting out of the audit, some companies still choose to appoint a statutory auditor. This decision is often driven by the desire to enhance investor confidence, business partner trust, and financial institution assurance. Indeed, even a limited audit provides a guarantee of transparency and sound financial management of the company.
An audit can also be an asset for companies seeking to raise funds or obtain bank financing. For example, banks often require companies to submit audited financial statements to assess their creditworthiness. Similarly, clients and suppliers may be more inclined to collaborate with a company that has undergone an independent audit, seen as a mark of seriousness and reliability.
Although the audit is not mandatory for all companies in Switzerland, it can serve as a strategic tool for some, especially when they wish to enhance their credibility in the market and with financial partners.

Advantages of appointing an auditor
Although the appointment of a statutory auditor is not mandatory for all companies in Switzerland, it offers numerous advantages that can enhance a company’s management and credibility. Whether for a small business looking to reassure its financial partners or a large corporation aiming to maintain rigorous governance, appointing a qualified auditor can prove to be a strategic decision.
Increased financial transparency
The appointment of a statutory auditor ensures greater financial transparency by ensuring that financial statements are prepared rigorously and in compliance with accounting standards. This transparency is a major asset for companies looking to attract investors or secure financing. Financial partners, such as banks and private investors, are often more inclined to trust a company that has had its accounts audited, as this demonstrates a commitment to financial rigor and the reliability of the information provided.
The audit conducted by the statutory auditor helps detect potential errors in the balance sheets or income statements, which enhances the company’s credibility with its shareholders and partners. This proactive approach creates a positive image of the company, especially in sectors where stakeholder trust is crucial.
Financial Risk Prevention
One of the other key advantages of appointing an auditor lies in their ability to prevent financial risks. By regularly reviewing the company’s financial statements and internal processes, the auditor can identify potential anomalies or weaknesses in internal control. This allows management to act quickly to address these issues before they escalate into more serious financial difficulties.
This continuous monitoring helps to minimize the risks of fraud, accounting errors, or poor financial management, which can jeopardize a company’s stability. With concrete recommendations from the audit, companies can adjust their financial strategies and improve their resource management. For large corporations, this regular evaluation helps ensure that all internal processes comply with best practices while maintaining a level of rigorous control over their finances.
Appointing an auditor is therefore not only a good governance practice but also a protection against financial risks that could negatively impact the company’s long-term growth and stability.
How to choose an auditor in Switzerland?
If your company in Switzerland is required to appoint an auditor, choosing this expert is crucial to ensure the reliability of the audit and the transparency of your finances. Here are the main criteria to consider when making this selection:
Skills and certification
In Switzerland, an auditor must be a certified auditor, meaning a certified public accountant approved by the Swiss authorities, particularly by the Federal Audit Oversight Authority (FAOA). It is essential to choose an auditor with recognized qualifications and solid experience in your industry. A competent auditor will be able to understand the specifics of your field and provide tailored advice to improve your financial processes.
Before making your choice, also check the references of the auditor as well as the previous audits they have conducted. An expert with extensive experience and proven skills will provide a more thorough analysis of your financial statements.

Independence and objectivity
The independence of the commissaire aux comptes is a sine qua non condition to ensure the objectivity of the audit. The auditor must be completely independent of the company to avoid any conflict of interest. This means they should have no financial, personal, or professional ties with the shareholders, executives, or management members of the company. Total objectivity is essential for the audit to accurately reflect the company’s financial health without bias or external influences.
This independence is also a guarantee of trust for external stakeholders, such as banks, investors, or business partners, who rely on the auditor’s neutrality to ensure the reliability of financial information. It is therefore imperative to ensure that the chosen auditor strictly adheres to professional ethical standards.
Conclusion
The auditor plays a central role in the transparency and compliance of a company’s accounts in Switzerland. Although not all companies are required to undergo an audit, those that exceed certain thresholds or wish to enhance their credibility should seriously consider this option. A regular or limited audit not only ensures compliance with Swiss regulations but also improves internal management and reduces financial risks.
Choosing a competent and independent auditor is essential to ensure a quality audit that will add real value to your business. By considering the criteria of competence, independence, and suitability to the specific needs of your activity, you can select an auditor capable of effectively and transparently assisting you in managing your financial obligations.
Questions – Answers
The commissaire aux comptes is an independent auditor who verifies and certifies the compliance of a company’s financial statements. Their role is to assess whether the annual accounts accurately reflect the company’s financial situation while adhering to Swiss accounting standards.
No, only companies that exceed certain financial thresholds are required to appoint a commissaire aux comptes for a regular or limited audit. Small businesses can opt out under certain conditions.
Companies that exceed two of the following three thresholds for two consecutive financial years are subject to a regular audit:
A total of 20 million Swiss francs in balance sheet.
An annual turnover exceeding 40 million Swiss francs.
A workforce of more than 250 full-time employees.
What is a limited audit?
A limited audit is a less thorough examination than a regular audit. It applies to companies that do not exceed the thresholds required for a regular audit but still need to undergo a minimal review of their accounts to ensure transparency.
Opting-out allows a company to forgo the audit if it has fewer than 10 full-time employees and all shareholders agree. This helps reduce administrative burdens for small businesses.
The statutory auditor ensures better financial transparency, enhances the company’s credibility with investors and banks, and helps to prevent financial risks by detecting potential anomalies in accounting management.
The cost of an audit varies depending on the size and complexity of the company, as well as the type of audit required (ordinary or limited). The costs can be significant for a small business, but they are justified by the benefits in terms of compliance and credibility.
Yes, even if the audit is not mandatory, some companies voluntarily choose to appoint a statutory auditor to enhance investor confidence and ensure better internal management.
SA (Sociétés Anonymes) and SARL (Sociétés à Responsabilité Limitée) are subject to the same rules regarding audits. The thresholds for a regular or limited audit are the same for both types of companies.
To choose a good auditor, it is essential to select a certified, independent auditor with experience in your industry. They must be able to provide an objective and rigorous assessment of your company’s financial statements.